Feeding device for water-purifying apparatus.



PATENTED MAY 2l, 1907.

M. E. NEWMAN.

FEEDING DEVICE FOR WATER PURIEYING APPARATUS.

APPLICATION FILED JAN. ll, 1907.

Mii-2:42085.' v

UNITED STATES PATENT OFFICE.

i MARTIN F. NEWMAN, -OF WILKINSBURG, PENNSYLVANIA, ASSIGNOR TO WM. B.SOAIFE & SONS COMPANY, OFPITTSBURG, PENNSYLVANIA, A

uid, a chemica CORPORATION OF NEW JERSEY.

FEEDING pEvlcE Fon wATER-PuRIFYlNG APPARATUS.

Specification of Letters Patent.

` Patented May 21, 1'907.

TQ all whom, t may concern:

Beit known that I, MARTIN F. NEWMAN, a citizen of the United States,residing at Wilkinsburg, in the State of Pennsylvania, have inventedcertain new and useful Improvements in Feeding Devicesfor'Water-Purifying Apparatus, of which the following is a 'specicationMy invention relates to apparatus for proportionally sup lying to a mainbody of liql)solution, as feeding coagulants in waterpurifying aparatus.

The rimary objects o, the invention are to dis ace in the chemicaltankva roportion o fluid in fixed ratio to the fee of theV Araw Water,while making it easy to regulate the roportion; to provide an overflowfeed reg ated by the level .in the Weir box ywhich feeds the main suply; to provide a rotary regulating outlet fdr the chemical feed tank,

' `and 'to generally im rovev the operation of Isuch apparatus as wihereinafter a pear.

In the accompanying drawings, igure 1 is a vertical section on the line(l) (1) in Fig. 2,

and the latter figure 1s a plan view of the Figs. 3 and' 4 arerespectively a orizontal section and a vertical section on line (4), (4)of Fig. 3, of thel outlet rotary weir.l y

Though the invention describedv is ap licable to many other uses, I haveillustrated3 it as applied to waterpurifying apparatus in which it willbe understood that there isadded to the Water a solution containing acertain proportional amount of the chemical such as a coagulant foi`removing impurities in the Water. It is im ortant in" such apparatus tobe able to readily adjust the pro ortion of chemical to thewaterfsipply, an ,also that the 'pro-V portion When a )usted shall beconstant even though the amount of water used may vary. From thedrawings it will appear that there is a receiving tank 5 for the rawwater,

which is provided with a baflie plate 6 to' keep the surface quiet, andit has an outlet pipe whose mouth 7 forms a Weir and empties into theipe 8 leading to the re-action tanks. In t e receiving or Weir box 5 Iplace a supplementary pipe 9 which has an upward projecting end laprovided with a slot asy shown in Figs. 3and 4 having over it acylindrical hood 10 with a similar slot, the hood 10 being revoluble lonthe pipe extension 10a in"order to "regulate the Width of the slot 10b.The pipe 9 empties into a tank 11 and passes through a box 12 containinga com artment 13 for the chemical and some kin of filter or strainerunder the same, and empties by overflow through .a pipe 14 from whencethe chemical solution is led to some convenient point of mixture withthe main supply in pipe 8.

The amount of flow through the weir box and the pipe 8 will of coursedepend upon the head of water, and likewise the flow outward through thepipe 14 will depend on the level of waterin the boxll. The flow into thebox` 11, which always displaces an equal amount of the chemical, isregulated by the same head of water 'as regulates the ilow through pipe8, the slot b of the regulating intake being about the same level as theWeir of the box 5. At the same time by turny' ing the cap 10 ofthe pipe10a the widthv of the slot 10b is regulated and regulates the.

proportional ilow into the chemical box.

Thus the flow of the chemic-al'begins when the main flow begins, andceases when the latter stops, and at Whatever level the water i may bein the feed tank 5, the amount of water discharged into tank 1l todisplace the chemical, is in the same proportion, as this has beendetermined by regulating the opening of the outlet'lOa.A y y Variousother advantages of the device will readily occur. to those familiarwith the art.

Having thus vdescribed my invention and illustrated its use what I claimas new and desire to secure by Letters Patent is the following.

1. A chemical feed pparatus comprising a solution tank and outlet, atank feeding a main supply of liquid by overflow, and an adjustable Weirintake for the solution tank placed inside thelmain feed tank, wherebthe amount of liquid fed to the solution tanlf is alwa s proportional tothe main ilow.

2. T e combination with a feed tank having an overflow outlet, achemical solution tank having-an overow outlet, and a pipe feeding thesolution tank from the li uid in the feed tank having a Weir intake, sustantially as described.

3. The combination with a water feed tank having an overflow outlet, ofa supplementary overflow outlet therein provided with an IOO adjustableWeir, a chemical solution tank supplied by the latter, and having anveriiow outlet with connections to join the main plementary Weir outletfrom the same to the solution tank, said Weir being adjustable incapacity without changing the level of the outflow. v f

5.' The vcombination with a supply tank,

and a solution tank each emptying by overflow, of a Weir pipe from thesupply tank `to the solution tank Ahaving a vertical inlet slot and ashutter device for regulating the width of said slot, substantially asdescribed.

6. In water purifying apparatus an intake Weir comprising a vertical'pipe having a vertical slot, and a slotted sheath on said piperotatable thereon for regulating the `Width of said intake slot,substantially as described.

In testimony whereof' I have hereunto F. W. H. CLAY',

CH'As. S. LEPLEY.

signed my name in the presence of the two y

